Brief case frame protectors



Sept. 3, 1957 L. LIFTON 2,804,901

BRIEF CASE FRAME PROTECTORS Filed Feb. 18, 1957 '7 Sheets-Sheet 1 INVENTOR. Lewis Lifton {00 ATTORNEY Sept. 3, 1957 1.. LIFTON BRIEF CASE FRAME PROTECTORS 7 Sheets-Sheet 2 Filed Feb. 18, 1951 .n R0 2 mm m 2 ML n VS W 6 mm M mm. m. w W1 F W ME 4 wvfi W m Sept. 3, 1957 L. LIFTON 2,804,901

BRIEF CASE FRAME PROTECTORS Filed Feb. 18, 1957 7 Sheets-Sheet 3 M PZE f,

L z g3 INVENTOR. Lewis Li ion ATTORNEY Sept. 3, 1957 LlFTON 2,804,901

BRIEF CASE FRAME PROTECTORS Filed Feb. 18, 1957 7 Sheets-Sheet 4 ATTORNEY Sept. 3, 1957 L. LIFTON f 2,8 4 1 BRIEF CASE FRAME PROTECTORS Filed Feb. 18, 1957 7 Sheets-Sheet 5 FIG.49 5

I NVENTOR. Lewls Lif on AT TOR NEY Sept.

Filed L. LIFTON BRIEF CASE FRAME PROTECTORS Feb l8 1957 FIG.6O 464 RG5? FIG.58

7 Sheets-Sheet? FIG.62 4 1; %9 /7 24 FIG.54

IN V EN TOR.

4 Lewis Lifton 4 P 4/2 5 BY 4: 4r 0 .5/

J3 J0 ATTORNEY Se t. 3, 1957 L. LIFTON 2,304,901

BRIEF CASE FRAME PROTECTORS Filed Feb. 18, 1957 7 Sheets-Sheet 7 FIG. 78 16 J55 IIYVENTOR. Lewls Lifjon ATTORNEY United States Patent BRIEF CASE FRAME PROTECTORS Lewis Lifton, New York, N. Y.

Application February 18, 1957, Serial No. 640,632

20 Claims. (Cl. 150-49) My invention is concerned with novel protectors for brief case frames which comprise foldable complementary inverted and covered U-shaped inner and outer members adapted to form the mouth of the brief case and adapted to be swingably brought together or widely swung apart in the matter of closing or opening the brief case. In actual practice the inner and outer U-shaped frames each includes a reach having spaced depending legs. The frames each embody an appropriate leather covering or simulation thereof. The lower terminals of corresponding legs of the inner and outer frames are-pivotally mounted on a cylindrical shank of a rivet. A gusset and front and rear back walls constitute the inner compartment of the brief case and are appropriately attached to the frames. If the brief case be opened the complementary frames become widely separated. However, the reactive drag or weight of the brief case walls and gusset acting on these frames while open tends to fold the frames, that is, tends to undesirably close or partially close the brief case, thus requiring one hand of the operator to hold the frames from collapsing, namely, from closing while the other hand of the operator is loading or unloading the brief case. Moreover, in brief cases of the type referred to, a metal washer is mounted on each rivet between the terminals of corresponding legs of the frames and another metal washer is mounted on each rivet and positioned against outside legs of the frames before the respective rivet or fulcrum means for the corresponding legs is upset. By such arrangement although the frames are pivotally associated, the lower faces of the terminals of the spaced depending legs of the coverings of the frames are thus exposed. Such exposed faces leave an unsightly appearance particularly after use of the brief case when such coverings at such exposed faces start to separate. If the coverings at the exposed faces do separate the metal. framesbecome un-- covered and unattractively show, hence detracting ,from the desired appearance of the brief case apart from the fact that moisture or the like now also attacks the'metal frames at the exposed areas. In addition, the lower faces of the separated coverings often become scraped and also often fray, thereby further detracting from ,the desired appearance. The invention accordingly aims to provide a novel protector adapted to receive and conceal the lower ends or terminals of the depending legs of a covered frame to preclude undesirable exposure of the end faces thereof. Another object is concernedwith the provision of novel protectors for the terminals of the depending legs for both the outer and inner complementary covered' frames. Another object is realized in the provision of a protector of the character referred to which actually serves to enhance the appearance of the brief case. Another important object resides in the provision of a multi-purpose one piece protector also having bearing means eliminating if desired the need of interposing separate washers between the lower corresponding depending legs of the inner and outer complementary frames. Another object re- V, asraaat 1C6 Patented Sel $1957 disengageable locking means on companion protectors for adjacent terminals of the swingable or foldable complementary frames, the locking'means being'adapted and responsive to automatically hold the collapsible frames fully open to permit the operator full freedom to utilize both of hishands in the matter of loading or unloading the brief case. Another object is further realized in the provision of disengageable locking means on companion protectors mounted on the foldable frames to either hold the brief case automatically fully open or automatically fully closed. Other important aspects, objects, and structural and functional features of the invention will be considered in the following detailed specification considered in the light of the accompanying drawings where- Fig. 1 is a perspective view of the brief case on a small scale and employing the protectors according to one form of my invention.

Fig. lAis an enlarged perspective and broken view of the covered inner and outer complementary pivoted and collapsible frames shown in'Fig. 1.

Fig. 2 is a front view of the protector illustrated in Fig. l.

Fig. 3 is a rear view of Fig. 2.

Fig. 4 is a side view of Fig. 2.

Fig. 5 is a top view of Fig. 3.

Fig. 6 is a bottom view of Fig. 3.

. Fig. 7 is an enlarged horizontal sectional view line 7-7 of Fig. 1A.

Fig. 8 is a vertical sectional view on the line 8--8 of Fig. 7. Y

Fig. 9 is an exploded and fragmentary perspective view of the swive'led frames shown in Fig. 1.

Fig. 10 is a view similar to Fig. 1A' but illustrating another protector according to my invention.

Fig. 11 is a front view of the protector shown in Fig. 10.

Fig. 12 is a rear view of Fig. 11.

Fig. 13 is a top view of Fig. 12.

Fig. 14 is a bottom view of Fig. 12.

Fig. -15 is a side view of Fig. 12.

Fig. 16 is a fragmentary exploded perspective view of the pivoted frames illustrated in Fig. 10. i

Fig. 17 is an enlarged horizontal sectional view onthe line 1717 of Fig. 10. 1

Fig. 18 is a sectional view on the line 1818 of Fig. 17.

Fig. 19 is a view similar to Fig. 9 illustrating another form according to the invention.

Fig. 20 is an assembled view of the parts shown in Fig. 19. l v

Fig. 21 is a horizontal sectional view on the line 2121 of Fig. 20. V

Fig. 22 is an enlarged sectional view on the line 22 22 of Fig.'21

Fig. 23 is a view along the lines of Fig. 1A but illustrating another embodiment according to my invention.

Fig. 24 is a plan view of Fig. 23, illustrating the complementary pivotal frames fully open.

Fig. 25 is a side view of Fig. 24.

Fig. 26 is a side view of Fig. 23.

Fig. 27 is an enlarged perspective view of the covered inner and outer complementary frames shown in Figs. 23 to 26 however partly broken away and illustrating companion locking protectors for corresponding rotatable and associated terminals of the depending legs thereof.

Fig. 28 is a fragmentary and enlarged view of Fig. 24.

Fig. 28A is a sectional view on the line 28A-28A of Fig. 28, illustrating the detents of the cooperating protectors in locked relation to hold the swingable frames fully open.

Fig. 29 is a vertical sectional view on the line 3-2.

on the sides in the provision in a brief case of cooperative but of Fig. 26. V

of Fig. 25..

Fig. 31 is a view taken on the line 31-31 of Fig. 29, illustrating the detents of companion protectors unlocked to permit opening. of. the swingahle. complementary frames. i i

Fig- 31Ais a. view similar to. Fig. 28A but illustrating the detents: of companionframes just prior to.- their snapped. over or interlocked relation. 7

Fig. 32 is; an exploded perspective view of theLident-izcal but: reversed. companion protectors for the complementary covered frames illustrated in. Figs. 25 to. 31.

Fig; 33 is another perspective views of the-. identical. companion protectors. or. sockets: shown in Fig. 32

Fig. 3.4 is.a rear elevational: vievw of oneof the corm panion protectors shown inFig. 32;.

Figs. 35., 36 and 3.7 are. top; bottom and side views. ofi Fig. 34..

Fig. 38 is a front view of Fig. 34, however partly broken; away to illustrate the indented bafik or wall.

Fig. 39 is a fragmentaryside view on asma'll scaleof a brief case shown closed and carrying conq'lanri'om'pro tectors according to another: embodiment: of the invention.

Fig. 40 is a fragmentary side view ofi Fig. 39 showi'ng the briefcase. fully/opened; I

Fig. 41 is a fragmentary plan view of Fig. 40, illustrating the complementary frames in their fully" opened relation. i

Fig. 42 is a horizontal on: the' line: 4242' of Fig. 40. l

Fig.1 43- a fragmentary: and: enlarged view of Fig.- 41.

Fig. 44 is a sectional view on the line 44-44 ofFig. 43*.

Fig. 45'is;a sectional view onthe: line 45-45 'of'Fig. 39.

Fig. 45A is a sectional view on the line 45A45A- ofi Fig.45.

Figs. 46, 47, 48 and 49 are back,.bott'om, side and top views of: one of the identical protectors shownin Figs. 39 to 45. Fig. 50. is a front. viewof Fig. 4'6, shown partly broken away.

Fig. 51 is a perspective and exploded view of the-companion swiveled protectors shown in Fig; 45.

Fig. 52 is a fragmentary side view' on a small scale of a brief casehaving complementary and disconnectable locking means according to. another form of the harem tion.

trating the; brief case fully-open.

Fig. 54 is; aplan view'of Fig; 53, showing the companion frames fully open. i

Fig. 5.5- is; a. fragmentary but enlarged view: ofFig; 54.

Fig. 56 is an enlarged sectional view on the line 56 -56 of Fig. illustrating. the companion protectors locked in the fully opened relation of the complementary frames;

Fig. 57- is a sectional view on. the. line-5-7'-57- ofi Fig. 52, illustrating the companion frames locked in thein'full'v' closed relation. 7" 1 Fig. 57A isanz exploded perspective view of: the: com panion swiveled protectdrs'illnstratedin Fig. 55.

Figs. 58, 59, 60, 6.1 andf 62 are. front, rear, side, bot tom and top views of. the: outside: protector or socket shown in Fig. 57A.

Figs. 63, 64, 65 and-66arerear,.front;.side and: bottom views of: the insideprotector. orkeeper shownin Fig. 5.71%.. Fig. 63A is an enlargedfragmentary sectional;view on: thearcuate. dash dot. line. 63A.-63A. of Fig 63. p Fig. 67 is a horizontal sectional view ontheline67-67. of Fig. 63'. g a

Fig, 68' is a fragmentary side view of a brief-Tcaseon asmaller scale and shown closed, ,however employing companion locking protectors according, to still another form of-' the invention.

Fig. 69 is a fragmentary view of Fig. 68 illustrating the brief case fully opened. 7

Fig. 53 is a fragmentary view of Fig; 52 but illus-- Fig; 70' is a plan view of'the locked frames shown in Fig. 69...

Fig. 71 is a fragmentary enlarged view of Fig. 70.

Fig. 72 is a vertical sectional view on the line 7272 of Fig. 68.

Fig. 73 is a horizontal sectional view on the line 73-73 of Fig. 69.

Fig. 74 is an exploded perspective view of the companion, identical but reversed protectors shown in Fig. 72, however exhibting the: inside protector partly broken away.

Figs. 75, 76, 77 and 78 are back, side, bottom and top views of the. outside protector shown in Fig. '74,. and

Fig. 79 is a front view of Fig. 75, shown partly broken away.

Illustrative of the embodiments disclosed, swingable appropriately covered complementary inner and outer frame sections FA and PB characterize mouth M of a conventionaL brief case-BC:

As to sectionsFA and FE: eachcomprises an: inverted U-shaped metal bar or member generally denoted;10.-embodying a h-orizontal. reach" 11- provided with spaced dependinglegs 12..

Bars. 10 are. concealed and adhesivel-y secured within a respectivecover-ingC which-may be of leather or a.simula tion' thereof.

- The-terminals or ends of. legs 12, include alined: per forations 13-.v in alignment: with perforations 1.4"- ofrespective coverings The ali-necL perforations. at the coveredterminals of sectionsF-Aand FB are adaptedto receive shanks S- of rivet or'fulcrum' means. R- as. is; well understood.

Inner frame section. EA issmaller. in size. than outer frame. section PB and may be. swung or nestedintoor out. of the latter. to. fully close or. open-mouth- M.- @overings (Lextend beyond lower terminals oflegs l2.and end in-lips 1 (Fig.9)..-

In acttralpracticqdipsLare adhesively securedto each. other andend. faces 109 of those lips, it unprotected are. exposed; During. use. these lips L do at timesseparate thereby exposing, the metal depending legs: 12 permitting moisture. toattack the latter. and causing oxidation. or

Unintentionall blowsreceived by the lower parts of the frame. sections FE and FA. during, use. also. cause scratch.- ing, scrapinganck marringof end. faces and. as previously stated. causes even separation of lips. L. In. either casethe appearance. of the. brief case is disadvantageously afi'ected'. To overcome such.- disadvantages particularly in regard to shielding, the lower. covered terminals or ends: of aframe. sectionaand. end faces. 1110., hollow protectors. or keepers, broad1y .den0tecl'. E are provided to receive. such lowered. covered terminals.

Each frame protector P according to theernbodimcnt illnstrated'. in Figs. 1-9 comprises. an open top. housing having'an uninterrupted bottom. wall 15. from which. extends front, and; reanwall's .1'6Tand. 17' as well. as the side walls. 18." Bottomwall 15 and sides 18. constitute a. rim: defining with front wall; I6. a receptacle. characterizing a socket or opening, 19 for. receiving the lower. covered terminals or ends offirame section EB- As to. walls 16 and 17 of the protectors P', each includes. alined. openings- 20 and. 21 for reception. of cylind'rica-l' fulcrum shank. S of rivet. R'. After threadingshank Sthrough perforations 14; 13"and14-(1Fi'g. 7)-of'frame sectionsFA and through. alined openings or perforations 21,, 14' 1-3,. 14, 20,. in frame section PB and. protector, P; shank S. has. its. outer end 22' upset whereby the latter and head. H: of rivet R. rotatably' retain. frame sections. FA. and PB. on fulcrum shanksSi Rear Wall 11 'of'each protector although. in. part do.- tachechfromsides 18" (Fig. 9); characterizes abearing. against which" section swivels. or rotates. It follows that protectorsFapart from preventingfraying, scraping.

and even: separation of lipsiL, further serve to. facilitate. rotat on? of section FA. relative to section. FE and viceversa. It is also apparent that the rims of protectors P also shield the juxtapositioned end faces 100 of covering C of the outer frame section FB. It will be observed that leather coverings C of frame sections FA and PB terminate in margins 25 to which are appropriately attached for example, by stitching, gusset portions G and front and rear walls 23 and 24 of the brief case BC.

In the embodiment according to Figs. to 18 parts corresponding to the form illustrated in Figs. 1-9 are primed. However protector P according to Figs. 10-18 distinguishes from the form illustrated in Figs. 19 in that rim RM constituting the bottom and side walls is uninterrupted. In Figs. 10 to 18, rim RM is also more rounded. Otherwise the embodiment according to Figs. 10 to 18 is along the lines of the form shown in Figs. 1 to 9.

In the modification shown in Figs. 19 to 21, parts corresponding to the embodiment illustrated in Figs. 10 to 18 have been double primed and socket 19 of protector P is now bounded by rim RM" and front wall 16", the bearing plate or back wall 17 of the type shown in Figs. 10 to 18 having been removed. Instead a conventional and separate bearing washer or annulus W is employed on shank S and interposed between the complementary inner and outer covered frame sections FA" and PB. In other aspects the embodiment according to Figs. 19 to 21 follows the forms shown in Figs. 1 to 18.

In the form according to Figs. 23 to 38, parts similar to those illustrated in the embodiment according to Figs. 1 to 9 are identified by like reference characters but raised to the second power. In addition the depending terminals of the covered inner frame FA are disposed within protectors or shields P similar in structure to the outside protectors P but reversed whereby companion adjacent walls 17 thereof face each other, such walls including facing annular hubs or bearings 40 held swiveled or rotatable relative to and against each other by the upset rivets R Detents 41 and 42 are struck out of walls 17 of outside protectors P and similar detents 43 and 44 extend from wall 17 of the inside protector 1 Companion pairs of detents 41 and 42; and 43 and 44 of juxtapositioned protectors P and P at the swiveled or hinged parts of the complementary covered frames Fl? and FA constitute means for disengageably locking these companion frames in their fully opened relationship (Figs. 28 and 28A), that is, when the brief case RC is fully open (Figs. 24 and 25), detents 41 and 42 of protector P have snapped over detents 44 and 43 of protector P that is, from their positions noted in Fig. 31A to their interlocked relation or engagement shown in Fig. 28A.

When frames PB and FA are moved from their closed or nested position in Fig. 26 to open mouth M (Figs. 24 and 27), detents 44 and 41 move towards each other and the same may be said of detents 42 and 43, that is, cooperating detents of companion protectors move from their positions shown in Fig. 31 at which time the frames are nested or closed, to their positions, shown in Fig. 31A at which time these frames PB and FA are almost fully separated but at which time detents 41 and 42 just meet detents 44 and 43 respectively but have not snapped over each other for disengageably interlocking. Thereafter detents 44 and 43 of the inside protectors do automatically snap over and by detents 41 and 42, thus disengageably interlocking therewith (Fig. 28A) to hold these frames F13 and FA fully apart at the maximum mouth opening M shown in Fig. 24, hence counter balancing the drag or weight on these swiveled frames by the gusset G and front and rear walls 23) and 24 of the brief case, all ofv which tends to close or collapse such frames after they are opened and let go. By the arrangement disclosed it is evident that even though manual pressure is removed from the complementary swiveled frames, they are automatically held fully open and locked in such open relation by the complementary protectors P and P permitting both hands of the operator to be free for loading or unloading the brief case. To unlock the protectors, finger pressure is applied to the top faces thereof, thus urging the frames to fold, that is, collapse whereby detents 44 ride over detents 41, and detents 42 snap over detents'43 to be arranged again as shown in Fig. 31A after which frame FA is quickly telescoped within frame PB and the detents are now arranged as shown in Fig. 31.

As previously stated annular hubs 40 constitute bear-. ing means for the complementary protectors P and P and are appropriately swiveled or rotatable on shank S between ring spacer and head H or rivet R which is upset to adequately retain spacer 45 from falling off shank S Walls 16 of protectors P and P comprise ears 46 effectively secured to complementary frames FE and FA by rivets 47. Otherwise the protectors shown in Figs. 23 to 38 are along the lines of the protectors illustrated in Figs. 1 to 9.

In the form according to Figs. 39 to 51 parts corresponding to the embodiment shown in Figs. 23 to 38 are identified by like reference characters but raised to the third power. The forms illustrated in Figs. 39 to 51 are identical in structure to the embodiments shown in Figs. 23 to 39 except that the companion annular hubs or bearings. such as 40 have been eliminated.

In the embodiment shown in Figs. 52 to 66 parts corresponding to similar parts in connection with the form exhibited in Figs. 39 to 51 have been identified by like reference characters but raised to the fourth power. In Figs. 52 to 62, detents 41 and 42 of protector P are along the vertical center line of its associated bearing wall 17 whereas the imaginary center line running through detents 41 and 42 of protector P in the form according to Fig. 51 are alternately spaced from the vertical center line of bearing plate 17 Wall 17 of each inside protector P however includes spaced arcuate clearing or relief guide slots (Fig. 63) adapted to receive bumps or detents 41 and 42 which ride on inclined or cam portions 51 prior to snapping or reception into identical indentations 52 and 53 respectively to lock automatically the complementary frame FA andFB (Fig. 57) in their fully closed relation. Detents 41 and 42 also cooperate with indents 53 and 52 respectively in the matter of holding frames FA and FB detachably locked when thrown into their fully open position shown in Figs. 53, 54, and 56. In other aspects the embodiment shown in Figs. 52 to 62 is substantially along the lines according to the form exhibited in Figs. 39 to 51.

In the forms shown in Figs. 68 to 72 corresponding parts of the earlier embodiments herein have been indicated by like references but raised to the fifth power. In Figs. 68 to 72, protectors P and P have their hearing walls 17 each provided with an opening 60 at their upper parts. Spaced below openings 60, hearing walls 17 embody a detent 61 struck towards, in the case of protector P front wall 16 thereof, and in the case of protector P struck away from its front wall 16 to overhang the latter for removably engaging, that is, interlocking with indentation or socket 62 defined by detent 61 of protector P as indicated in Fig. 72 for maintaining complementary frames F3 and FA fully closed, or alternatively to removably interlock with opening or aperture 68 of protector P for holding such frames fully opened as illustrated in Figs. 69,70 and 73. In other aspects, the embodiment according to Figs. 68 to 72 substantially follows the form illustrated in Figs. 52 to 67 inclusive. 7

Various changes may be made in details of construction and arrangement of parts without departing from the scope of the invention or sacrificing any of the advantages thereof inherent therein.

I claim:

1. In combination, companion protectors adapted to shield and be secured to corresponding pivoted and covered terminals of complementary frames adapted to open or close a brief case, said protectors having facing walls,

andsaid walls. having complementarymeans to;disengageoftsaidsframesrelativetd the other. 7

2min, combinatiom companion. hollow protectorsadaptedioshieldand.be. securedto corresponding, pivoted and. covered terminals; of. complementaryrexpandible or; collapsible frames: adaptecLto opener, close. a. brief. case, said protectors, having, facing. walls including. substantially annular. bearing meansmovable relative. toeach: other andsaid walls also havingcomplernentary means. todisengageably lock saidprotectorsio, automatically hold said frames fu1ly,op.en..

3... In. combination, contiguous and. hollowprotectors adapted .toshield. and be. securedJto. correspondinglpivoted... juxtapositionednnd. covered terminals. of complementary. expandible. or. collapsible framesadaptedto open or close a brief case, said protectors having. facing. walls movable relative to each-other, .andsaid walls having. overhanging complementary means. to. disengageably lock. said} pro.- tectorsto automatically holdsaid frames either fully openton, fully; closed.

. 4.1m combination, companion hollow protectors adaptedlto.shield.and.be secured to, corresponding pivoted and'coveredterminals of. complementary. expandible or collapsible adapted .to .open or. close a brief case, said protectors. havingfacing walls movable relative to. eacli other, andsaid walls having cooperative detent means. to. disengageably lock. said. protectors. to. automatically hold said. frames. fullyopen..

51.111 combination, companion hollow. protectors adaptedfto. shield. and be. secured. to..corr.esponding. pivoted and? covered terminals of complementary expandible or collapsible frames -,adapted'to open or close a brief case, saidlprotectors havingv facing walls movable relative to. eacli. other, andsaid'wall having spaced andcooperative detent. means to. disengageably, lock said. protectors. to automatically hold .said frames fully open.

6..II1. combination, companion hollow protectors adapted to shield .andbe secured to. corresponding pivoted and'covered terminals of complementary expandible or collapsible. frames adapted to open or close' a briefcase, saidprotectorsv having facing walls. movable relative to each. other, and'said wall'sh'aving cooperative indent and detent means to. disengageably lock said protectors to automatically. hold said' frames. fully open.

7..Iii combination, companion hollow protectors adaptedto shield andbe secured -to corresponding pivoted and-.covered terminals of complementary expandible or collapsible.framesadaptedjto. open or close. a briefcase, saidprotectors havinga pair of'facing Walls movable relative to. each. other, one of said walls having detent means, and the otherwall'of said pair having an arcuate slot. for. receiving said detent. means and having indent meansforremovably interlocking with said 'detent means,

, ably lock. saidprotectors to rcsist .disp lacement phone.

and cam means; for directing said detent means into saidindent means.

8. In a protector. for. shielding juxtapositioned end faces ,of a covered and perforated terminal of a depending legofQa frame section and for. cooperating with a rivet havinga shankadapted'to be received by saidtermi'nal; the combination of, afront wall, a rim carried by said front wallanddefining therewitlia socket for reception of said coverediterrninal to permit said rim to shieldsaid' end faces, aback wall carried by said. rim'and' spaced from said'frontwall and-in part defining saidsocket, said front wall and back wall having alined perforations for reception. of saidzshank to retain said perforated terminal within saidportector, and'said back wall having a locking component.

9. In a protector for shieldingjuxtapositioned'endfaces of a covered and perforated terminal-of adepending-leg of a frame, section and for cooperating with a rivethaving a shankadaptedtobe received by said terminal; the'combination of, a front-wall, a rim carried bysaid-front wall anddefi'ning; therewith a= socket for reception of said 8 coveredterminal to;permit..said..rim..to shield said end. faces,,a.back..wal1 carriedby, said;rim.and spacedfrom... saidlfront wall and :in part r defining said. socket,= bearing, means; overhanging, said. back wall said, front, wall} and;

. bearing means: having, alined. perforationsiior. reception ations forreception of said shank to retainsaidperforated terminal .withinsaidprotector, and saidback wallhaving spaced locking. components aboutsaidbearing means.

11. In. combination, companion hollow protectors. adaptedlto shield and be secured :to .correspondingpivoted and coveredterminals ofv complementary expandible. or. collapsible frames adapted toopenorclosea brief case, said protectors having a a pairof facing walls..movable; relative. toeaclr othenone of. said wallshavingdetent means,.and.the otherrwallof saidpair; having an. arcuate. slot for mevably. receiving said detent meansandhaving indent means for removably. interlocking withsaicl detent means, andcarn means inadvanceof said indent means. for directingsaiddetent means-into said indent means...

12. .In combination, companion hollow. protectors.

adapted. to shield-and beseeuredto corresponding pivoted I.

andqcoveredn terminals, of complementary expandible. or. eollapsibleframes adapted-to open or close. a briefcasesaid protectors having a pair of facing walls movable. relativetoeach. other, one of i said wallshaving spaced and substantially alined detent-means, and the. otherwall of said pair having spacedv arcuate. slots for movably receiving said detent means and havingspaced and. substantially alinedindentmeans for. removably interlocking. withsaid detent means, and cam meansat-corresponding. ends of said, slotsfor directing said detent means into saidtindent means,

13. In a protector'for. shielding juxtapositionedend faces of. acovered and perforated terminal of a depending leg of a. frame section and forv cooperating with arivet. having a shank adapted to be received bysaid. terminal; the combination of, a front wall,.a rim carriedv by. said frontwall and. defining therewith a.socket for reception of. said, covered terminal to permit said rim tov shieldv saidv end faces, a back wall carried by said rimand spaced. from said front wall and in partdefining,saidsocket, said frontwall and back wallhaving alignediperforations for receptionof said shankto retainsaid perforated terminal within said, portector, and. a detent overhanging said. back wall.

14. In a protector for. shielding. jnxtapositioned end facestof a covered and perforatedterminal-of adepending leg of'a frame section and for cooperating with a. rivet having ashankadapted to be :receivedby said terminal; thecombination-of, afront wall, arim: carried by said front Wall and defining therewith-a socket. for. reception of said coveredterminal to .permigsaid rimito shield said; endfaces, a back wall carried by said rimand. spaced from said frontwall and in-part. defining saidsocket, said frontwall and back wall 'havingalined perforations for reception of said shank toretain said perforated terminal within-said protector, and spaced detents. struck. out from and "overhangin g said. back: wall.

15; In. atprotectorfor shielding juxtapositioned, end.-

facesof-acovered and perforatedterminal of-a depend-.

ingleg ofa frame. section .andzfor cooperatingwitha rivet 9 having a shank adapted to be received by said terminal; the combination of, a front wall, a rim carried by said front wall and defining therewith a socket for reception of said covered terminal to permit said rim to shield said end faces, a back wall carried by said rim and spaced from said front wall and in part defining said socket, said front wall and back wall having alined perforations for reception of said shank to retain said perforated terminal within said protector, and said back wall having indent means.

16. In a protector for shielding juxtapositioned end faces of a covered and perforated terminal of a depending leg of a frame section and for cooperating with a rivet having a shank adapted to be received by said terminal; the combination of, a front wall, a rim carried by said front wall and defining therewith a socket for reception of said covered terminal to permit said rim to shield said end faces, a back wall carried by said rim and spaced from said front wall and in part defining said socket, said front wall and back wall having alined perforations for reception of said shank to retain said perforated terminal within said protector, and said back wall having spaced substantially alined indent means.

17. In a protector for shielding juxtapositioned end faces of a covered and perforated terminal of a depending leg of a frame section and for cooperating with a rivet having a shank adapted to be received by said terminal; the combination of, a front wall, a rim carried by said front wall and defining therewith a socket for reception of said covered terminal to permit said rim to shield said end faces, a back wall carried by said rim and spaced from said front wall and in part defining said socket, said front wall and back wall having alined perforations for reception of said shank to retain said perforated terminal within said protector, and said back wall having spaced substantially alined indent means and having spaced arcuate slots interposed between and spaced from said indent means.

18. In a protector for shielding juxtapositioned end faces of a covered and perforated terminal of a depending leg of a frame section and for cooperating with a rivet having a shank adapted to be received by said terminal; the combination of, a front wall, a rim carried by said front wall and defining therewith a socket for reception 10 of said covered terminal to permit said rim to shield said end faces, a back wall carried by said rim and spaced from said front wall and in part defining said socket, said front wall and back wall having alined perforations for reception of said shank to retain said perforated terminal within said protector, said back wall having spaced and substantially alined indent means and having spaced arcuate slots interposed between and spaced from said indent means, and cam means at the ends of said slots.

19. In a protector for shielding juxtapositioned end faces of a covered and perforated terminal of a depending leg of a frame section and for cooperating with a rivet having a shank adapted to be received by said terminal; the combination of, a front wall, a rim carried by said front wall and defining therewith a socket for reception of said covered terminal to permit said rim to shield said end faces, a back wall carried by said rim and spaced from said front wall and in part defining said socket, annular bearing means overhanging said back wall, said front wall and bearing means having alined openings for reception of said shank to retain said perforated terminal within said protector, and said back wall having a locking component spaced from said bearing means.

20. In a brief case having companion frame members including covered depending means adapted to utilize a shank constituting fulcrum means, a pair of juxtapositioned hollow protectors for receiving and shielding said covered depending means and comprising spaced outside walls and contiguous facing Walls, said walls including alined openings for also receiving said fulcrum means to allow rotation of said protectors relative to said fulcrum means, and said facing walls including means for disengageably locking said protectors against rotation.

References Cited in the file of this patent UNITED STATES PATENTS 284,446 Lieb Sept. 4, 1883 298,050 Zinkand May 6, 1884 765,598 Schlag July 19, 1904 827,480 Traut July 31, 1906 1,430,267 Smith Sept. 26, 1922 1,473,932 Gotisar Nov. 13, 1923 

